A victim of sexual harassment may file legal claim even if s/he has tolerated the behavior for fear of retaliation or losing their job.
The law remains unclear whether a woman "who is not herself the object of sexual harassment might still have a hostile environment claim." (Women and Sexual Harassment: A Practical Guide to the Legal Protections of Title VII and the Hostile Environment Claim by Anja Angelica Chan, JD, [Harrington Park Press: New York, 1994]).
Offensive and demeaning behavior does not have to be tangibly detrimental (ex. wage loss, passed promotion) to the job to be considered sexual harassment.